Remote control arrangement



Jan. 27, 1942. E. RHElN REMOTE CONTROL ARRANGEMENT Filed Aug. 23, 19.39

' MM: RIM/GE CONTROL CONTEOL Iu/M: CONTROL sou/v20 RH //v INVENTOR.

ATTORNEY.

Patented Jan. 27, 1942 armors coN'raoL ARRANGEMENT Eduard Rhein, Berlin, Germany, assignor to Telei'unken Gesellschaft fiir Drahtlose Telegraphic m. b. H., Berlin, Ge

Germany many, a corporation of Application August 23, 1939, Serial No. 291,502 In Germany August 29, 1938 3 Claims.

The present invention relates'generally to remote control systems employing an electric driving means and more particularly to an arrangement wherein a single motor is employed for selectively adjusting any one of several variable elements.

While systems of this general type have been devised heretofore, it is to be noted that such systems as' are already known, involve elaborate and complicated controls making the systems bulky, expensive and unreliable.

In accordance with the present invention control systems of the type mentioned above are greatly simplified by the utilization of a motor which isprovided with two stators disposed in different parallel planes extending at right angle to the motor shaft whereby the one or the other stator can be excited .selectively so that the the one stator plane, or into the other stator plane whereby the shaft of the motor may be coupled thereby with one or the other adjustment device. j

An example of construction according to the invention is shown in the drawing wherein Fig. 1 illustrates a plan view of amotor according to the invention arranged to control separately four axially shiftable rotor can be drawn either into adjustable devices; and, Fig. 2 is a diagrammatic representation of a motor displacing instrumentality constructed in accordance with the present invention. Referring more particularly to Figure R2 to engage wheel K4.

1, the shaft W of the motor constructed, for instance, in accordance with the Ferraris principle is mounted in an axially shiftable manner and carries a short circuit disk A. In a plane parallel to the plane of the disk'two stator poles S1.

and S: are arranged which carryth main coils. The appertaining auxiliary poles situated in the same plane-and displaced in the circumference by 90 relative one another are not shown in the flgures.- In a plane extending likewise in parallel to the disk A two further stator poles S1 and S2 also carrying main coils are arranged at the other side of the short circuit disk A. By means of the switch U situated-at the place of control the main coil system S1, S2 or the corresponding system S1', S2 can be connected selectively to the alternating voltage source E and thereby energized. The short circuit disk A is drawn, in either case, into the plane of the excited stator. In the one case the rotor shaft is coupled by means of the wheel R1 with the friction wheel K1 and thereby with the volume control L of the receiver, and in the other case the shaft is coupledacross the correspondingly This swinging around, or displacement of the motor can be controlled by a simple relay R such as is clearly seen from Fig. 2. The motor M is hereby rotatablymounted'about a shaft A1 by means of a lever arm H fastened thereto. The torque moment produced by the weight of the motor is balanced in the position shown in Figure 2 by means of a spring F thus maintaining the motor in such a position that the wheel R1 will engage the friction wheel K1 if windings S1,

S: are energized and wheel R2 will engage friction wheel K: if windings S1, Szf are energized.

Through excitation of the relay magnet R the lever arm H is swung about .against the force of gravity at the motor and against the spring F such that upon energization of windings S1, S: the front wheel R1 engages the friction wheel Ka whereas, energization of S1, S2 will cause wheel The motor may thereby be coupled with the band width control means B provided that the stator S1, S2 windings are energized at the same time that R is energized or with the wave range control V provided windings S1v and-Si are energized at thesame time relay R is energized.

The exciter coil of the relay magnet R is switched-in by-the switch T which is connected in series to the direct voltage source Q located preferably at the place from which the control spring plate is slotted and shaft W is passed.

through these slots. The slots are made of Suincient length soas to permit the shaft to be shifted upwardly by operation of lever H from the position shown so as to bring the shaft W in a position to be driven by either wheel K1 or wheel K4 depending upon which set of magnets is energized.

I claim: v 1. In an electric motor, a pair of stator members, a rotor member, said rotor member being axially shiftable in either direction, means biasing the rotor to a central position relative to the stator members, one or said stator members being mounted in a plane extending at right angle to the axis of the rotor member which plane is displaced to one side of said central position of the rotor,-the other stator member being mounted in a plane parallel to the plane of the first mentioned stator member and displaced a substantially equal amount on the-other side or the central position or the rotor, and switching means for selectively energizing either of said 

